Correct definition of Importance. Want less importance to have a hgiher value. Make not null.

db/zm_create.sql.in

@@ -539,7 +539,7 @@ CREATE TABLE `Monitors` (
   `Longitude`  DECIMAL(11,8),
   `RTSPServer`  BOOLEAN NOT NULL DEFAULT FALSE,
   `RTSPStreamName`  varchar(255) NOT NULL default '',
-  `Importance`  enum('Not','Less','Normal'),
+  `Importance`  enum('Normal','Less','Not') NOT NULL default 'Normal',
   PRIMARY KEY (`Id`)
 ) ENGINE=@ZM_MYSQL_ENGINE@;
 

db/zm_update-1.36.9.sql

@@ -0,0 +1,2 @@
+UPDATE Monitors set Importance = 'Normal' where Importance IS NULL;
+ALTER TABLE `Monitors` MODIFY `Importance`  enum('Normal','Less','Not') NOT NULL default 'Normal';